What's the correct way to unsubscribe from Single

Question

I want to do something after short delay:

public void notifyMe() {
Single
       .timer(500, TimeUnit.MILLISECONDS)
       .subscribeOn(Schedulers.io())
       .subscribe(ignore -> service.notifyMe()));
}

Now I have a warning: "The result of subscribe is not used". How can I fix it?

Is this in an Android application? If so, you should add the result to a `CompositeDisposable`. — akarnokd, Dec 16 '17 at 14:17
@akarnokd, whats's different between android and java (java test / console application, etc) in this case? And how can help me CompositeDisposable? Anyway somebody should call dispose. So, my question: method scubscribe() return me Disposable, I should call it after I send notify, right? — Yura Shinkarev, Dec 16 '17 at 14:40
Android has more strict lifecycle and have to be extra careful with leaking flows. On desktop Swing, you should also do `CompositeDisposable.add()` when doing actions in a window that can be closed by the user. You should call `dispose` when the action is no longer needed to happen. If you call it immediately, the notification won't happen. — akarnokd, Dec 16 '17 at 15:54
Sorry @YuraShinkarev but I thought you were trying to subscribe, not unsubscribe, so my previous comment was not relevant. — GVillani82, Dec 16 '17 at 17:06
@akarnokd I wrote `notifyMe` function. I want in background after short delay did some job (service.notifyMe). My public function do not return any variable. I want call and "forgot". So, I want implement with rxjava same: new Thread(new Runnable(){...}).start() or in android: new AsyncTask().execute(). — Yura Shinkarev, Dec 16 '17 at 19:33

score 2 · Accepted Answer · edited Jan 09 '19 at 13:29

2

A Single will only call once. Upon calling either method, the Single terminates and the subscription to it ends.

Link can be referred for more information.

edited Jan 09 '19 at 13:29

Vadim Kotov

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answered Dec 18 '17 at 05:52

Ankit Kumar

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What's the correct way to unsubscribe from Single

1 Answers1

Linked